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Investigation of Superplastic Behavior of NiAI and Ni3Al Duplex Alloy
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ABSTRACTThe superplastic behavior of a NiAI and Ni3Al duplex alloy was investigated. It was found that the alloy exhibits superplastic behavior over a narrow temperature range, from 975 °C to 1025°C at the strain rate of 1.52 × 10-4 s-1. A maximum tensile elongation of 149% was obtained at 1000°C with the strain rate sensitivity up to 0.375. The superplastic deformation of the duplex alloy can be approximately described by an empirical equation of the form: ε = Ao2.67 exp(-303,000 / RT). Optical microstructure and TEM observation show that the superplastic behavior mechanism of the investigated alloy is a process of continuous recovery and recrystallization during deformation.
Springer Science and Business Media LLC
Title: Investigation of Superplastic Behavior of NiAI and Ni3Al Duplex Alloy
Description:
ABSTRACTThe superplastic behavior of a NiAI and Ni3Al duplex alloy was investigated.
It was found that the alloy exhibits superplastic behavior over a narrow temperature range, from 975 °C to 1025°C at the strain rate of 1.
52 × 10-4 s-1.
A maximum tensile elongation of 149% was obtained at 1000°C with the strain rate sensitivity up to 0.
375.
The superplastic deformation of the duplex alloy can be approximately described by an empirical equation of the form: ε = Ao2.
67 exp(-303,000 / RT).
Optical microstructure and TEM observation show that the superplastic behavior mechanism of the investigated alloy is a process of continuous recovery and recrystallization during deformation.
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